Trujillo Fuentes’s departure “has to do” with the lack of progress in several widely reported disappearances from Mexico City bars, including the case of 12 young people who were taken from a bar in the popular Zona Rosa tourist district in late May, the official said.

An eyewitness reported the incident to the bureau, but officials did not notify the Federal District Attorney’s Office in a timely fashion, delaying the start of the investigation, the official said.

The victims’ relatives staged a series of protests, drawing attention to the case.

No arrests have been made in connection with the disappearance and the whereabouts of the victims is not known.

The young people were led away from the Heaven bar in the Zona Rosa by masked gunmen on May 26, relatives and a young man who managed to escape said.

The victims, who were employed and liked to spend time at the bar, were led away from the establishment to waiting SUVs by men dressed in black who identified themselves as police officers, relatives said.

The victims are from Tepito, one of the most dangerous neighborhoods in Mexico City and a center for sales of pirated goods.

One of the missing youths is Jerry Ortiz Ponce, a 16-year-old boy whose jailed father, Jorge Ortiz Reyes, is one of the leaders of the La Union gang, media reports said.

Ortiz Reyes is still running the criminal organization from prison, media reports said.

A rival gang may have staged the kidnapping to settle a score with La Union following the killing of a drug dealer in Mexico City two days before the youths disappeared, press reports said.

The bureau also failed to make progress in investigating the disappearance of five young men on April 21 from the Virtual Mix Club in northern Mexico City.

Jose Alfredo Ferrer Alvarez has been named to temporarily replace Trujillo Fuentes.